The Extech 421502 thermometer with type K/J inputs has a dual display and programmable audible alarms at maximum/minimum value. It has a measurement accuracy of 0.05%, min/max/mean value display, measured value memory, relative function and differential temperature measurement between type J, type K or type J and K. The scope of delivery includes two type K pearl temperature probes, a protective cover with stand and a 9 V battery.